<form name="punchout_form" method="post" action="https://openapi.alipaydev.com/gateway.do?charset=UTF-8&method=alipay.trade.page.pay&sign=LM1u8rj1vOIZcfnpA7Ws5vUYk4XG2%2BhJrk5xwOhuDKrQzr7ogtmTW7zQ1cCiP%2FFis4WkDZrG6NDm3L%2FxcRc6Po1zZa2z1nIGKYp9ey%2FX4kskHAv0LPhfqPxvNhjtyqEJHGvnAHELjzqhQOKgw0%2Fq8lNQ8icIWoUhfXKhuMlEghHWbtoInraDYZ53zHPiVJYaF%2FyMxA78zAv01HNre04UTRXLNnHuOj%2BZiT8DmN58P0lf1ex77Kq9C2GIv8764oxFrqkv2nU19c%2BRYQ9ALReT70mHmL05aon2lwLYwDvdzdRGsPeRLzahEeZD0AFNj2FbpWTBmuKo5e%2BAC3hLHaKfvg%3D%3D&return_url=http%3A%2F%2Flocalhost%3A8888%2Forder%2Freturn_url&notify_url=http%3A%2F%2Flocalhost%3A8888%2Forder%2Fnotify_url&version=1.0&app_id=2016101600703540&sign_type=RSA2&timestamp=2021-11-16+22%3A36%3A13&alipay_sdk=alipay-sdk-java-dynamicVersionNo&format=json">
  <input type="hidden" name="biz_content" value="{&quot;out_trade_no&quot;:&quot;20211116223613534&quot;,&quot;total_amount&quot;:&quot;52&quot;,&quot;subject&quot;:&quot;测试订单&quot;,&quot;body&quot;:&quot;测试&quot;,&quot;product_code&quot;:&quot;FAST_INSTANT_TRADE_PAY&quot;}">
  <input type="submit" value="立即支付" style="display:none" >
</form>
<script>document.forms[0].submit();</script>